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Efectueaza calclele:
a)0,47m+23cm=....... cm
b)1h 45 minute+33 mimute=.......minute
c)1,6kg+800g=..........kg
d)1500 dm²+1m²=.....m²
urgent dau coroana si multe puncte


Răspuns :

1h 45 min +35 min = 1h 75 min = 2h 15 min 1,6 kg + 800 g = 1,6 kg+ 0,8 kg = 2,4 kg 1500dm² +1m² = 15 m²+ 1 m² = 16 m²